<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class AccountIdentity extends CUserIdentity
{
	private $_id;
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
		$username=$_POST['LoginForm']['username'];
		$password=$_POST['LoginForm']['password'];

        $user=User::model()->findByAttributes(array('user_name'=>$this->username,'password'=>$this->password));

  		if($user===null)
            $this->errorCode=self::ERROR_USERNAME_INVALID;
        else if($user->password!==$this->password)
            $this->errorCode=self::ERROR_PASSWORD_INVALID;
		else
			{
				$this->_id=$user->id;
	            $this->setState('user_name', $username);
	            $this->errorCode=self::ERROR_NONE;
			}
		return !$this->errorCode;
	}

	public function getId()
    {
        return $this->_id;
    }
}